DYNAMICS AND DISTRIBUTED CONTROL OF CONICAL SHELLS LAMINATED WITH FULL AND DIAGONAL ACTUATORS

✍ Scribed by H.S. TZOU; D.W. WANG; W.K. CHAI

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 501 KB
• Volume: 256
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.4199

✦ Synopsis

Nozzles, rocket fairings and many engineering structures/components are often made of conical shells. This paper focuses on the "nite element modelling, analysis, and control of conical shells laminated with distributed actuators. Electromechanical constitutive equations and governing equations of a generic piezo(electric)elastic continuum are de"ned "rst, followed by the strain}displacement relations and electric "eld}potential relations of laminated shell composites. Finite element formulation of a piezoelastic shell element with non-constant LameH parameters is brie#y reviewed; element and system matrix equations of the piezoelastic shell sensor/actuator/structure laminate are derived. The system equation reveals the coupling of mechanical and electric "elds, in which the electric force vector is often used in distributed control of shells. Finite element eigenvalue solutions of conical shells are compared with published numerical results "rst. Distributed control of the conical shell laminated with piezoelectric shell actuators is investigated and control e!ects of three actuator con"gurations are evaluated.